Dynamic Source Routing (DSR) Protocol Options

DSR Option Types are 8-bit values, structured as three subfields:
Unk: If set, SHOULD respond to such a DSR option with a Route Error
of type OPTION_NOT_SUPPORTED
Act: a two-bit field indicating how such a node that does not
support this Option Type MUST process the packet:
00 = Ignore Option
01 = Remove Option
10 = Mark Option
11 = Drop Packet